I use aMSN, but i'm not seeing that feature. aMSN does support webcam though surprisingly, works well with my built in iSight, it was extremely slow when i was using it but my PC was running Azureus so i don't know how well it runs quite yet. Not seeing custom emoticons but i think Adium does.

MacRumors attracts a broad audience
of both consumers and professionals interested in
the latest technologies and products. We also boast an active community focused on
purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms.